In Progress® Kendo® UI for jQuery versions starting with 2012.2.710 and prior to 2026.3.1015, the Validator decodes validation messages from data-msg-* attributes and parses the resulting text as HTML. An attacker who can modify a validation message can cause HTML that was correctly escaped in the page attribute to become active markup, including event handlers, when the user triggers validation. Successful exploitation can execute JavaScript in a user's browser and compromise the confidentiality and integrity of data accessible to the affected application. This issue is fixed in version 2026.3.1015.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-validator-message-xss-cve-2026-106151 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-20 19:38
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-20 19:38
- StatusAwaiting Analysis → Undergoing AnalysisNVD modified 2026-10-15 19:17
- First seenCVSS 5.4NVD modified 2026-10-15 16:08
Affected (CPE criteria) 1
cpe:2.3:a:progress:kendo_ui:*:*:*:*:*:*:*:*